The Danfoss 103 Electro-Mechanical 24 Hour Time Clock is a general-purpose, 24-hour, electro-mechanical timeswitch which provides a single output circuit.
The 103 timeswitch fits the GP wallplate and has an identical wiring configuration which allows systems to be upgraded without the need for rewiring.
The Danfoss 103 Electro-Mechanical 24 Hour Time Clock has a Timed, Off, and Constant Switch, and a thumbwheel, which allows early selection of future switching operations.